This thread explains step by step how to configure Firebase in AppYet. 1. Go to the AppYet app project and select the Firebase tab. 2. Create a Firebase account or just login into the Firebase Console (you need to use a Google account), after that click on Add Project and finally click on Add Firebase to your Android app. 3. Add your package name (you can find it in the General tab in appyet.com) and the SHA certificate fingerprint (you can find the code in the Firebase tab in appyet.com). 4. Click on Register app button and download the file google-services.json. You need to upload it in the Firebase tab. 5. Rebuild/Reinstall AppYet app. ✓ That's it! Now you can use many of the Firebase tools (such as Analytics, Cloud Messaging and Crashlytics). ------------------------ PS: If you want to use Firebase Cloud Messaging to send push messages, you need to go to Cloud Messaging page in your Firebase project and Compose Message. Remember that all the app users will receive the message. ------------------------ PS2: If you have set your Firebase project with the AppYet app and some feature don't work, check that the SHA certificate fingerprint is successfully added: 1. Open the Firebase Console (https://console.firebase.google.com), select your project, and click on Project settings: In the following page, search the section SHA certificate fingerprints in Your apps (below the page) and add the code you have on the Firebase Tab in appyet.com.